List of [Tokyo]s likely to let you in if you have a tattoo in Ota-ku/Sauna

Sauna

Map of facilities in Sauna(Ota-ku) environs of Tokyo

List of facilities in Sauna(Ota-ku) environs of Tokyo

Natural hot spring nuland Sagami Miyu

Natural hot spring nuland Sagami Miyu

It is clearly stated that it is prohibited on the homepage.

大田区仲六郷2丁目7-5

Kamata Onsen

I can put it in without problems

大田区蒲田本町2丁目23-2

Yushi Kamata

Feel free to enter even women

大田区蒲田1丁目26-16

Garden Sauna · Kamata

Garden Sauna · Kamata

大田区蒲田5丁目20-5-1F